What用法很多。当what作关系形容词来限定、修饰后接名词的用法，其具有微量含义：虽然少但是都……;仅有的……都
请研习以下经典例句：
What friends she has are out of the country.
The few friends she has are out of the country.
What few friends she has are out of the country.
她仅有的几个朋友都出国了。
He collected what information he could find.
He collected the little information he could find.
He collected what little information he could find.
他收集了他能收集的仅有的一点信息。
I gave him what money I had.
I gave him what little money I had.
我把我仅有的那一点钱都给了他。
He has sold what books he had.
He has sold what few books he had.
我把我仅有的那几把书都卖了。
I will lend you what books I can spare.
I will lend you what few books I can spare.
我将把我用不着的为数不多的几本书借给你。
He deposited what money he saves in a bank.
He deposited what little money he saves in a bank.
他把节省下来的一点点钱都多存入了银行。
Lend me what money you have on hand.
Lend me what little money you have on hand.
请把你手头仅有的那些钱都借给我吧。
She will give the sick baby what care she can.
She will give the sick baby what little care she can.
她将把她仅能给的关爱都给这个生病的孩子。
He claims to be an expert in astronomy, but in actual fact he is quite ignorant on the subject. What little he knows about it is out of date and inaccurate.（考研真题）
他自称是天文学专家，但实际上他对这个问题一无所知。他对这问题所知甚少，而且是些过时的，也是不准确的东西。
What ideas he has are his wife’s. 他仅有的一点想法都是他妻子的。
I gave him what money I had.
我把我仅有的那点钱都给他了。
I was surprised by her words, which made me recognize what silly mistakes I had made.（湖南高考真题）
她的话使我吃惊，这些话使我认识到了我所犯的那几个仅有的错误。
I will give you what books I possess.
我要把我仅有的几本书都给你。
I will help you what help I can.
我当尽我微薄的；力量来帮助你。
Lend me the reference books you have on the subject.
请把你的关于这个题目的那几本参考书都借给我吧。
You may bring what photos you like.
你可以带你喜欢的那些为数不多的照片来。
The professor spent what little money he had on books.
那位教授把他仅有的一点点钱都花在买书上。
He left what little furniture he owned to his landlord in lieu of rent.
他把自己仅有的那点家具留给了房东抵房租。
His mother sent him what little money she had saved.
他的母亲把所有那一点点所节省的钱都寄给他了。
The house consumed what little there was of my spare time.
这房子耗费了我所有的一点点空闲时间。
What few friends I have here are very kind to me.
我这儿仅有的几个朋友都对我很好。
I spent what little time I had with my family.
我仅有的一点儿时间都和家人在一起度过了。
但是，有时也可以表示特指：
What money I have will be yours when I die. =
The money I have will be yours when I die.
我一死我的钱就都给你。
What possessions I have are yours.=
The possessions I have are yours.
我的所有的财产都是你的。